Adam Levine didn’t really have to do much Saturday night at Sleep Train Amphitheatre. He could have pulled up a stool, sat down and read a phone book out loud, and thousands of his fans — female and male, young and old — would’ve still gone crazy wild.

Levine of Maroon 5 is the star in the group. He’s got the name recognition; he is, after all, Adam Levine — celebrity host of NBC’s hit show “The Voice,” singer-songwriter, occasional actor, Grammy winner. And with his smoldering eyes and toned tattooed body, the Maroon 5 front man oozes sex appeal.

At Saturday’s concert — part of the 34-city Honda Civic Tour that’s double-billed with “American Idol” first-season winner Kelly Clarkson, with an opening act by Levine protégée Rozzi Crane — Levine did what Adam Levine does best: deliver a performance that left everyone wanting more … more Levine. This, despite the fact that Levine seemed to be somewhat off.

Perhaps he was nursing a cold or the rigors of a long tour, which ends at the sold-out Hollywood Bowl tonight, are finally taking their toll. At Saturday’s sold-out concert in Chula Vista, Levine did just fine with many numbers in the group’s 19-song set, but here and there were glimpses of a Levine who wasn’t quite 100 percent.

At 9:37 p.m., after a rousing 15-song set by Clarkson, the dark stage suddenly came to life, bathed in blue-green light and graphics. Levine grabbed the microphone and began singing, catching the audience somewhat off-guard because the song (“One More Night”) started out sounding more like a sound check than an opening number.

Soon, though, the pace picked up and Levine’s voice, previously muddled by the rest of the band, found its place, just in time for “This Love,” an original work by Levine and keyboardist Jesse Carmichael for the band’s 2002 debut album, “Songs About Jane.”

Maroon 5’s rise to fame and the charts may just well be because of its front man’s music, production and business savvy — it really got a second chance after “The Voice” proved to be a formidable alternative to Fox’s aging, worn-around-edges “American Idol.” And for that, the band and the 19,442 people in attendance Saturday, are more than happy to give him credit.

Saturday’s show was highly produced and all business, with one song quickly leading to the next. The band didn’t detract from a set list that has been used throughout most of this tour, down to the three covers, which included Daft Punk’s “Get Lucky,” Prince’s “I Wanna Be Your Lover,” and Gym Class Heroes’ “Stereo Hearts.”

It’s a formulaic, slick approach to music, but those in attendance didn’t seem to mind. Right on cue, white beach balls appeared on stage as Levine uttered the first words to “Lucky Strike,” from its fourth album, 2012’s “Overexposed.” Soon, the balls were bouncing around in the mosh pit and bathed in green laser light.

Maroon 5 was throwing a party, and they brought all the accoutrements: a disco ball, lots of confetti and in Levine, the consummate host.